HCl Vapor Post-Deposition Heat Treatment of CdTe/CdS Films

    Research output: Contribution to conferencePaper


    Data on the structural and optical properties and cell performance of thermally evaporated CdTe/CdS films are presented as functions of the HCL concentration and temperature of a post-depositon heat treatment. The degree of preferred (111) orientation decreased while the grain size of the CdTe films increased with increasing HCL concentration and temperature. The sulfer content of a CdTe/sub1-x/S/sub x/ layer also increased with HCL concentration and temperature to a maximum value of~2%. Cell performance improved over as-deposited values to~8% efficiency. Experimental difficulties associated with the use of hydrochloric acid and with oxygen in the anneal ambient are discussed.
    Original languageAmerican English
    Number of pages4
    StatePublished - 1996
    EventTwenty Fifth IEEE Photovoltaic Specialists Conference - Washington, D.C.
    Duration: 13 May 199617 May 1996


    ConferenceTwenty Fifth IEEE Photovoltaic Specialists Conference
    CityWashington, D.C.

    Bibliographical note

    Work performed by the University of Delaware, Newark, Deleware

    NREL Publication Number

    • NREL/CP-22437


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